After the recent post from IceFrog about Nightcrawler video, i make some search and find some interesting facts. Looks like the Nightcrawler is already appear on Dota 6.55 Beta hidden on -SD mode. And some people manage to capture a screenshots and write some explanation about his skills. Of course, the upcoming Nightcrawler on Dota 6.65 can be a totally different from that version. But, who knows ^^?

Here is some screenshots and skill explanation from Dota 6.55 Beta (the first picture above is also from Dota 6.55 Beta version) :

NightcrawlerThe first skill is an enemy unit targeteable, about 1000 range, and you charge against the enemy unit with windwalk, a lot of movespeed and leave a dark trail behind. When you charge the unit and you go across any enemy unit, it gets some kind of "curse" and it deals 10/20/30/40 damage every second for 6 seconds. And there is more, you can cancel the charge and run away, so you can go windwalk for about 20 seconds and lots of ms (25 seconds cooldown) (he has a base ms of 310, with windwalk it gets 465 oO) but then you can't spread this "curse".

Well, seeing the description of Nightcrawler skills from back there, it looks similar to the video on IceFrog blog although not completely same. On the video, we know that the Nightcrawler attacking the victim without revealing himself. But, i think it's worth to mentioned because there are some similarities, become invisible and leave a dark trail. However, we'll never know the true form of the Nightcrawler until IceFrog release the Dota 6.65 (or there's a Dota 6.65 beta leak xD). If you have any other information, just comment on this post ;)